--- Makefile	2014-12-08 09:11:10.188596202 +0100
+++ Makefile	2014-12-08 09:11:17.556595651 +0100
@@ -1,9 +1,9 @@
 PROG        = usb-modeswitch-data
 VERS        = 20140529
 RM          = /bin/rm -f
-PREFIX      = $(DESTDIR)/usr
-ETCDIR      = $(DESTDIR)/etc
-RULESDIR    = $(DESTDIR)/lib/udev/rules.d
+PREFIX      = /usr
+ETCDIR      = /etc
+RULESDIR    = /lib/udev/rules.d
 
 
 .PHONY:     clean
@@ -18,26 +18,26 @@ install: all files-install db-install ru
 install-packed: files-install db-install-packed rules-reload
 
 files-install: 
-	install -d $(PREFIX)/share/usb_modeswitch
-	install -d $(ETCDIR)/usb_modeswitch.d
-	install -D --mode=644 40-usb_modeswitch.rules $(RULESDIR)/40-usb_modeswitch.rules
+	install -d $(DESTDIR)/$(PREFIX)/share/usb_modeswitch
+	install -d $(DESTDIR)/$(ETCDIR)/usb_modeswitch.d
+	install -D --mode=644 40-usb_modeswitch.rules $(DESTDIR)/$(RULESDIR)/40-usb_modeswitch.rules
 
 40-usb_modeswitch.rules:
 	./gen-rules.tcl
 
 db-install: files-install
-	install --mode=644 -t $(PREFIX)/share/usb_modeswitch ./usb_modeswitch.d/*
+	install --mode=644 -t $(DESTDIR)/$(PREFIX)/share/usb_modeswitch ./usb_modeswitch.d/*
 
 db-install-packed:
 	@# Create a compressed tar without gzip timestamp, so tar.gz
 	@# differs only if content is different
 	cd ./usb_modeswitch.d; tar -cf ../configPack.tar *
 	gzip -f9n ./configPack.tar
-	install --mode=644 -t $(PREFIX)/share/usb_modeswitch ./configPack.tar.gz
+	install --mode=644 -t $(DESTDIR)/$(PREFIX)/share/usb_modeswitch ./configPack.tar.gz
 	rm -f ./configPack.tar.gz
 
 rules-reload:
-	@if [ -f $(ETCDIR)/issue ]; then \
+	@if [ -f $(DESTDIR)/$(ETCDIR)/issue ]; then \
 		UDEVADM=`which udevadm 2>/dev/null`; \
 		if [ "x$$UDEVADM" != "x" ]; then \
 			UDEVADM_VER=`$$UDEVADM -V 2>/dev/null`; \
@@ -57,7 +57,7 @@ rules-reload:
 uninstall: files-uninstall rules-reload
 
 files-uninstall:
-	$(RM) $(RULESDIR)/40-usb_modeswitch.rules
-	$(RM) -R $(PREFIX)/share/usb_modeswitch
+	$(RM) $(DESTDIR)/$(RULESDIR)/40-usb_modeswitch.rules
+	$(RM) -R $(DESTDIR)/$(PREFIX)/share/usb_modeswitch
 
 .PHONY:    clean install uninstall